Just installed a Universal H-Series H250 ASME heater indoor with the positive pressure vent kit. Unit ignites blue for approx 10 seconds then changes to a pinkish orange then to all orange. Everywhere I see, it says blue flame 2-4" tall and use the little glass viewer to see it. However, that glass viewer is so small, how does anyone see anything but color? Looking for information on how to actually view the flame height.
Also, being a new heater, it is burning on outside of unit. I have seen that it may be possible that it will do this. I have it inside a room with fans trying to keep my alarm system from tripping. Is this normal?
Thank you in advance. Aaron